CVE-2025-9688
MediumCVSS 5.0Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
In Mupen64Plus up to 2.6.0, the write_is_viewer function in src/device/cart/is_viewer.c contains an integer overflow vulnerability. The attack can be initiated remotely, though it is considered highly complex and difficult to exploit. The exploit has been publicly disclosed, and a patch is available in commit 3984137fc0c44110f1ef876adb008885b05a6e18.
Risk Assessment
An integer overflow may lead to unpredictable application behavior, including potential code execution or denial of service. Given the public exploit, there is a risk of exploitation by attackers.
Recommendation
Apply the available patch (commit 3984137fc0c44110f1ef876adb008885b05a6e18) or update Mupen64Plus to a version containing this fix.
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Original NVD description (English source)
A security vulnerability has been detected in Mupen64Plus up to 2.6.0. The affected element is the function write_is_viewer of the file src/device/cart/is_viewer.c. The manipulation leads to integer overflow. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been disclosed publicly and may be used. The identifier of the patch is 3984137fc0c44110f1ef876adb008885b05a6e18. To fix this issue, it is recommended to deploy a patch.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

